diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/aio.c | 6 |
1 files changed, 5 insertions, 1 deletions
@@ -103,6 +103,7 @@ static int aio_setup_ring(struct kioctx *ctx) unsigned nr_events = ctx->max_reqs; unsigned long size; int nr_pages; + bool populate; /* Compensate for the ring buffer's head/tail overlap entry */ nr_events += 2; /* 1 is required, 2 for good luck */ @@ -129,7 +130,8 @@ static int aio_setup_ring(struct kioctx *ctx) down_write(&ctx->mm->mmap_sem); info->mmap_base = do_mmap_pgoff(NULL, 0, info->mmap_size, PROT_READ|PROT_WRITE, - MAP_ANONYMOUS|MAP_PRIVATE, 0); + MAP_ANONYMOUS|MAP_PRIVATE, 0, + &populate); if (IS_ERR((void *)info->mmap_base)) { up_write(&ctx->mm->mmap_sem); info->mmap_size = 0; @@ -147,6 +149,8 @@ static int aio_setup_ring(struct kioctx *ctx) aio_free_ring(ctx); return -EAGAIN; } + if (populate) + mm_populate(info->mmap_base, info->mmap_size); ctx->user_id = info->mmap_base; |